CVE-2021-33663 (GCVE-0-2021-33663)

Vulnerability from cvelistv5 – Published: 2021-06-09 13:33 – Updated: 2024-08-03 23:58
VLAI
Summary
SAP NetWeaver AS ABAP, versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83,7.84, allows an unauthorized attacker to insert cleartext commands due to improper restriction of I/O buffering into encrypted SMTP sessions over the network which can partially impact the integrity of the application.
Severity
5.8 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
  • Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
SAP SE SAP NetWeaver AS ABAP Affected: < KRNL32NUC - 7.22
Affected: < 7.22EXT
Affected: < KRNL32UC - 7.22
Affected: < KRNL64NUC - 7.22
Affected: < 7.49
Affected: < KRNL64UC - 8.04
Affected: < 7.22
Affected: < 7.53
Affected: < 7.73
Affected: < KERNEL - 7.22
Affected: < 8.04
Affected: < 7.77
Affected: < 7.81
Affected: < 7.82
Affected: < 7.83
Affected: < 7.84
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      "vulnStatus": "Modified",
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              "lang": "en",
              "value": "NVD-CWE-noinfo"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
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                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "SAP NetWeaver AS ABAP, versions - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83,7.84, allows an unauthorized attacker to insert cleartext commands due to improper restriction of I/O buffering into encrypted SMTP sessions over the network which can partially impact the integrity of the application."
          },
          {
            "lang": "es",
            "value": "SAP NetWeaver AS ABAP, versiones - KRNL32NUC - 7.22,7.22EXT, KRNL32UC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT, 7.49, KRNL64UC - 8.04,7.22,7.22EXT, 7.49,7.53,7.73, KERNEL - 7.22,8.04 , 7.49,7.53,7.73,7.77,7.81,7.82,7.83,7.84, permite a un atacante no autorizado insertar comandos de texto sin cifrar debido a una restricci\u00f3n inapropiada del almacenamiento en b\u00fafer de E/S en sesiones SMTP cifradas a trav\u00e9s de la red, lo que puede impactar parcialmente la integridad de la aplicaci\u00f3n"
          }
        ],
        "id": "CVE-2021-33663",
        "lastModified": "2024-11-21T06:09:18.563",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "NONE",
                "baseScore": 5.0,
                "confidentialityImpact": "NONE",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
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            }
          ],
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                "attackVector": "NETWORK",
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                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N",
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              },
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              "impactScore": 1.4,
              "source": "cna@sap.com",
              "type": "Secondary"
            }
          ],
          "cvssMetricV31": [
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                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
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              "impactScore": 1.4,
              "source": "nvd@nist.gov",
              "type": "Primary"
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        },
        "published": "2021-06-09T14:15:10.010",
        "references": [
          {
            "source": "cna@sap.com",
            "tags": [
              "Permissions Required",
              "Vendor Advisory"
            ],
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          },
          {
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              "Vendor Advisory"
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Permissions Required",
              "Vendor Advisory"
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            "url": "https://launchpad.support.sap.com/#/notes/3030604"
          },
          {
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            "tags": [
              "Vendor Advisory"
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            "url": "https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999"
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        "sourceIdentifier": "cna@sap.com",
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    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T13:58:45+00:00",
      "cve": "CVE-2021-33663",
      "id": "CVE-2021-33663",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-33663",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33663.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.